Air  grttn



G. B. KEIL Aug. 14, 1923.

AIR GUN Filad April 21, 1921 3 Sheets-Sheet 1 nk-V l lirlnallll H p n v 1 ti r Phi F: PI i Aug. 14, 1923.

G. B. KEIL AIR GUN Filed April 21 1921 3 Sheets-Sheet 2 Aug. 14, 1923.

G. B. KElL AIR GUN Find April 21. 1921 Patented Aug. 14, 1923. 1,464,610

UN'LTEni STA-IDES PATENT; FFICE;

QW R n iicat-i n a eu-npnv21; m1. SerialNo'. magma To all whom 1% may aoncevmm 3 v F i ure 16 isi' a 'prspecfiivc, showing the B it known thab l, Gws'rAv 'B -K'EIL, 0f comp etedpiungey rad St. J osepli; Ber vieii G tiuntyiiM ichi'gang 91 Figure 17 is a dta'il-plrin VieW OI1 a larger citizen-6f the United Staties,-have-unwanted? scale; of the rezrnend portio'nof'the innen s'a crtain new and usefuilImprovement in bm r'el. v i Air Guns,' oi whihh-the fol lbwin g isaixfbeci Figur -18 isa-m6ar elevation 0r 'en l*wiw ligation. y of. eheshet metal tubular: plunger mid,

This invention'freilatesto ali r gu-nsi'n gqn showing the gun barrel i'ti'cross siec tioh. eral, but morefpartibulafl ly' t'Q lihbse haying" Ag thus illustrated, the inyention-"co'rn m lungen rod on whiehw chmpi esision rises a barrel-'1 secured to' the st0lUQ itV spring an'd sli dihg abu tinenilareg muunbeda janysuitable manner. The plunger head Genralij SbfiLtCd, thfa ohj'ecb ofi thia' 'inven j sli'des insaid balrre'l and comprises a leather? tion is toe'nsurea1stmng an d inm wsgnisiiaowasiher=3 m thelmgbali halid 4 the lt fl tor cunstrdatima' M ami: hertqfoi ey sp uhah having 9; fisinge 5 which bear against that-'- 'the mhanism of the gun will" nt fbe iagia'fback'ofis aid washerygind'zi stud"6 which Bin 7031 liable tad j oulz' ofi' ordv as hei eiioflie, ais|= tends lhr uuglrthe centeroi-said washtar zind will mor fully appan a is-rivetd oi er'up0n the small mecsilfwasher 26 10 increase the gianeml-r efii'izin'sy andfih isinscnted through th ho'lde v 4 to secure it serviceabiliby of an air guI 0f thipanticu to the plunge'rfrodi lav-character;

formed in the manner shown. Holes are punched, as shown, for the pin 8 previously mentioned. The abutment 19 is formed of sheet metal, as shown, and slides in the slot 10 of the rod, being made from the section of sheet metal shown in Figure 5, and is passed through the strip shown in Figure. (3, and is finally shaped as shown in Figure 7. Thus the abutment engages only the upper nd lower ethics of said curved portions 11, as shown in Figure-8,;so that these portions ll are rigid and not laterallyifiexible.

The action lever 20. is pivoted ion the gun at 21- and has a link connection-22 with said abutment, as shown, so that the abutment and rodare pulled back (see dotted lines in Figure 2) when the action lever'iS swung forward, and the abutment is-:t;hen pushed forward in. the slot 10 when the leverp-is pulled back into normal position. This compresses the coil spring 2-3 which is inter? posedibetiween the head 3 and the abutment 19,- inasmuch as =the trigger 241 enter the opening 15 in tllGIfiflP-Qlld otthe plungerv rod, thus holding theplunger ,in retracted position. hen the trigger is pulled, the

air is eompressed in the chamber '25 anddis charged into the inner barrel 26 in the usual and .well-known' manner, so-that the projeetilefin the barrel. 261s discharged from the un. The stud 6 is hollow,-as shown,

to hdld the tube 27 which discharges the air into .thebaureLZfi, and which slides in the latter. i =1 1 As theplunger rod is cylindrical, as ex plained,-it is not liable tobuckle or be bent out. of shape by the operation of the mechanism, as its-has the strength and rigidity, more orless, ofa tube throughout its entire rlength, and this ensuresincreasedrigidity.

and stiffness for the portions 11; which form the guide iorthe sliding abutment It with be seen that the trigger 24 is formed ;frorni.sheet metal, blanked out; and thenfitamiped; or pressed into the desired? shape, ,;so thatiitghas two ears hichu'ares. pivoted upon a transverse pin or pivot 47" inserted through; the strueturenofl the 'glln' for this put w-e, T.he .guide rod28 has. head 29,iwhieh between. then- BX tQD'dS iIltG ill, U?

an. A reil tweentthe ghee ,miwnied lby theihead 29, and the inner endof-the cavity 31,;Wl16138bfi :of the: latter, and which; ity 311in-theistoek0f the this spriagis compressed 'when the/trigger.

is pulledgbaok, 'and'is adapted to hold .the trigger. in itsnormalposition;. This for-ms a verystzeong and reliable spri-ng arrange ment ior the trigger, and insures greater uniformity in the; tensionand quality of the springs in the manuiaeture of. the gun, as these QQLLSPPLHg-"S' 132 can l emade oi spring wine in theusual-and;well-lrnownimanner. The said ,inner barrel 2,6 hastits iinnerend evoted at 30m thetrigger I 32 is interposed be provided with a head .gil liaying a screw threaded portion 34 whieh is scrtwed into a threaded socket or opening in the end ol the barrel land a cap or head 35 is Secured h Outer end Uithe barrel 2'6" 7 gun. The head or cap 35 is provided with a slot 37 adapted to register With the loading hole 38 'in the. barrel 3G,; hen the inner barrel. 26 is screwed partially .,in.pl aee, so that the. gun can be loaded by insertion of the shot through the hole 38 and the slot 0 3 7, thereby to fill; the-magazine chamber 39, in the usual manner. The inner ortrue. barrel 26 has its rearendportion, provided with a s'heetmetal; shot. feedllllor feeding the shot into theppening 41 in the barrel 26, so that theprojeetileswill be discharged in the usual and well known manner. A fter the gunis leadedinqthe .manner described,

the/head or cap 35 is thea umed enoug -ta bring the slob-371 out of register with thata hole 38, and, far; enoughntowtigh ten the threaded portion 34 in that-breaded socket.- 422, u -hereby this adjustment net only com pletes the assembli1.1g of, thegun, or completesthe tightening oi the inner barrel, i

26 in place, butalso closes the loading hole 38 to prevent the shot from escaping irom the barrel of theigunw i i s 5 It Will beseen thatth washerAS hich-is interposed between, thespring 231 and the .9

abutment 19 can either be rigid with said. abutment, or loose, as may. be desired said Washerslidingback and forth; on the plunger roclwith the-abutment... r i

\Vhat" I claim as my invention is... I

1. lnyan air gun, 'bhfi flQln hlJlatiOil of; a barrel, aplunger head in'said, barreh a cy-, lindrically tubular mbmbere forming; the

plunger redpif a d head-with.a eng udi guide slot in the top and bottomh-ofasaid, 9:;

em ers i m ng tra -He wa aside portions which are channel shaped in s tion-a t there e e rigi ins e d efwbei g laterally flexible, said rod being formed-I froinaa single blank 0t sheetimetal ithfits edges bent together in front of said slogan bu m e-r eged. M QQ'QD 1 said longitafdinal slot, so that said abutment is movable i back and .iorth. between and. in ,engagement with only the upper and lower edges neither, 9.:

cylindrical isides (if-said! anernber 1a: @651 spring arranged on said member jion ep'mpressron between, said head :and stud: abut- .mentp so athattsaid curyed. side iportions epi-E $4 tendwithinnthewspring anwaction leyerfa link connection betweengsairtlever iandisaid. abutment. and. at trigger v(tot catch wand hdldsaid, phuigen red in:a.-"t naC ed rP I tion, whereby said lever and labntrnentgo are then movablmte nolmhl pfl lliifl 15593 8 said abutment forward and thereby compress the spring along the cylindrical sides of said tubular member toward said plunger.

2. A structure as specified in claim 1. the rear end portion of said tubular member having Hat sides formed with upper and lower lugs in rear of said curved side portions to engage the barrel.

3. A structure as specified in claim 1. said tubular member having a rear end portion formed with flat sidesv and top and bottom. and with iii-turned lugs to limit the rear- 'ard motion of said abutment in said memher.

1. A structure as specified in claim i. said member being; formed from a sheet metal blank baring: lugs to engage the top and bottom oi said barrel. lugs to limit the rear- Wu rd movement ot said abutment. a trans verse portion to engage said trigger. paral lel longitudinal portions to form said curved side por ions. and a portion for attachment to said plunger head.

5. In an air gun. a plunger rod compris ing a sheet metal blank cut and then rolled into shape to form a cylinelricallv tubu ar membc havinga longitudinal guide slot between curred sides which are outwardly rouvex in cross section and channeled on their inner sides and which are. therefore. rigid instead of being laterally flexible. with the edges ot' the blank bent together in tront oi said slot. 21 "oil spring; outside 0"? and (onc ntric to said cu rcd sides of the tube. and m mus slidabl on said curved or channeled sides t com 'iress the spring.

6. A structure as specified in claim 5. having a. spring on said plunger rod. and means slidable in the slot to compress the spring.

7. A structure specified in claim 5. said member having a flat sided rear end portion Formed With upper and lower bugs in rear of said curred sides to engage the barrel. a trigger. and means integ al with said member in rear of said lugs to engage said tIifIfPl'.

R. In an air gun. a hollow plunger rod. g] solid metal portion fastened in he end of mid rod. said port on bar ng a flange and a stud at the ront end thereof. a plunger bead mounted on said stud. and a metal Washer on the end of said stud to hold said. head against said flange. the end of said stud l tll't iveted over on said Washer. and a tube in the stud.

9. in an air gun. the method of making; a ei'lindrical plun er rod therefor trom a. she t metal blank. thereby to form channel shaped pa rallcl guides. ompising the forming of the flat blank with parallel portions. with a slot between said portions. bending the blank to cvlindricall curve said parallel portions. so that these side portions are re duced to channel form and rendered rigid instead of being; flat and flexible. and thereafter rolling the blank into tubular form. thereby' forming; a longitudinal guide be tween said previously curved parallel portions. so that said slot is formed before the sides are curred. and whereby said paral lel curred portions become the cylindrical sides of said uide.

10. In an'air gun. the combination of a hollow pivoted trippgrcr. a guide rod tornied at its front end with a head extending Within said trigger. means providing a l'fill'lt) in which said rod reciprocates. a compression spring: on said rod for compression by said head in said cavity. a plunger rod hav ing a rear integral portion to engage said trigger. a pivot for said trigger above the plane of said integral portion. and a pivot xtending;- through said head and trigger bclor: said integral portion.

11. A structure as specified in claim 11). said spring; being coiled on said rod and said trigger being of heet m tal With side porti ns embracing the pivoted end of said rod.

12. To an air gun an inner barrel. mean Forming a. projectile magazine around the inner barrel. a screw connection tor the inner end of said ba rel. means providing? an opening through which the projectiles are allowed to enter the magazine. in loading' the gun. and means Whcrelr; rotation ot' said barrel closes said opening;'u'ithozsi limiting the rotation. i

13. A structure as specified in claim ii. said last mentioned means comprising a erlindric portion whi-b is rigid with said barrel and which tits and rotates in the outer end of said p ojectile magazine and which has an aper ure to register With said opening While the our is being loaded.

14. In an air gun an outer barrel. an inner barrel disposed. centrally within th outer barrel. forminga magazine chambe around the inner barrel. the outer barrel havimr an opening to permit the pro-iertilcs to enter the magazine chamber. in loading: the gun. the inner baricl having an openin; to permit the proiectiles to enter from. the magazine chamber. with a sheet metal feeding: derive secured to the inner barrel to direct the projectiles into the opening thereof. a cap fixed on the outer end of the inner barrel to rlosc the outer end of the outer barrel. said cap having a slot to rem ister with thiopening through whi h the projectiles enter the outer ba rel. and a screw connection or the inner end f bc ii:- ner barrel. whereby rotation of the inner barrel serves to close said opening in the outer barrel and screw the inner barrel tightly in place.

GUSTAV B. KEIL.

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